This randomized phase I trial studies how well trametinib with or without GSK 2141795 (protein kinase B [Akt] inhibitor GSK2141795) works in treating patients with endometrial cancer that has come back (recurrent) or does not go to remission despite treatment (persistent). Trametinib and Akt inhibitor GSK2141795 may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. It is not yet known whether trametinib is a more effective treatment for endometrial cancer when given with or without ATK inhibitor GSK2141795.